:root{--paper:#EEF2F8;--card:#fff;--ink:#0F1A3C;--mute:#5B6684;--line:#D3DAE8;--soft:#F3F6FB;--red:#E2242C;--blue:#1F4FE0;--green:#12916A;--gold:#EFAE00;color-scheme:light}
*{box-sizing:border-box}html,body{margin:0}
body{background:var(--paper);color:var(--ink);font:15px/1.6 'IBM Plex Sans KR',system-ui,-apple-system,'Apple SD Gothic Neo',sans-serif;word-break:keep-all}
a{color:var(--blue)}
.wrap{max-width:720px;margin:0 auto;padding:12px 16px 40px;display:flex;flex-direction:column;gap:14px}
.crumb{font-size:12.5px;color:var(--mute)}.crumb a{color:var(--mute)}
h1{font:400 30px/1.2 'Black Han Sans','IBM Plex Sans KR',sans-serif;margin:4px 0 4px}
.lede{margin:0;color:var(--mute);font-size:14.5px}
.badge{display:inline-block;background:#E4F4EC;color:#0F7B3D;font-size:12px;font-weight:700;border-radius:6px;padding:2px 8px;margin-top:6px}
.cnav{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.cnav a{flex:none;background:#fff;border:1px solid var(--line);border-radius:99px;padding:5px 12px;font-size:13px;font-weight:700;color:var(--ink);text-decoration:none}
.cnav a.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
.form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form label{display:grid;gap:5px;font-size:13px;font-weight:700;color:var(--mute)}
.form label.full{grid-column:1/-1}
.form input,.form select{font:600 17px 'IBM Plex Sans KR',sans-serif;padding:11px 12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%}
.form input:focus,.form select:focus{outline:3px solid rgba(31,79,224,.25);border-color:var(--blue)}
.form .unit{position:relative}.form .unit span{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--mute);font-weight:700;font-size:14px;pointer-events:none}
.form .unit input{padding-right:48px}
.form .hint{font-weight:500;font-size:11.5px;color:var(--mute)}
.btn{grid-column:1/-1;border:0;border-radius:12px;padding:15px;background:var(--ink);color:#fff;font:800 17px 'IBM Plex Sans KR',sans-serif;cursor:pointer;box-shadow:0 4px 0 #000}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 #000}
.big{background:var(--ink);color:#fff;border-radius:16px;padding:18px}
.big small{display:block;font-size:13px;color:#C9D1E6;font-weight:700}
.big b{display:block;font:800 38px/1.15 'JetBrains Mono','IBM Plex Sans KR',monospace;letter-spacing:-.02em;margin:4px 0}
.big b span{font:700 18px 'IBM Plex Sans KR',sans-serif;margin-left:4px}
.big p{margin:6px 0 0;color:#C9D1E6;font-size:13.5px}
.big .chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.big .chips span{background:rgba(255,255,255,.12);border-radius:99px;padding:3px 10px;font-size:12.5px;font-weight:700}
.big .chips span.hl{background:var(--gold);color:var(--ink)}
table.t{width:100%;border-collapse:collapse;font-size:14.5px}
.t th,.t td{padding:9px 6px;border-bottom:1px solid #EEF1F6;text-align:left}
.t th{font-size:12px;color:var(--mute);font-weight:700}
.t td.n{text-align:right;font-family:'JetBrains Mono',monospace;font-variant-numeric:tabular-nums}
.t tr.sum td{font-weight:800;border-top:2px solid var(--ink)}
.t tr.hl td{background:#FFF8E1}
.t small{color:var(--mute);font-size:11.5px}
h2{font:400 21px 'Black Han Sans','IBM Plex Sans KR',sans-serif;margin:0 0 10px}
.game{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;background:linear-gradient(135deg,#FFF3D6,#fff);border:2px solid var(--ink);border-radius:16px;padding:14px;text-decoration:none;color:var(--ink);box-shadow:0 4px 0 var(--ink)}
.game .e{font-size:34px}.game small{display:block;font-size:12px;color:var(--red);font-weight:800}.game b{display:block;font-size:18px}.game em{display:block;font-style:normal;font-size:12.5px;color:var(--mute)}
.game i{font-style:normal;background:var(--ink);color:#fff;border-radius:10px;padding:8px 12px;font-weight:800;font-size:13px;white-space:nowrap}
.game:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.others{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.others a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:13.5px}
.others a small{display:block;color:var(--mute);font-weight:500;font-size:11.5px}
.faq details{border-bottom:1px solid var(--line);padding:10px 0}.faq summary{font-weight:700;cursor:pointer}.faq p{margin:8px 0 0;color:#33405F;font-size:14px}
.src{font-size:12px;color:var(--mute);line-height:1.7}
.src a{color:var(--mute)}
.pct{height:12px;border-radius:6px;background:rgba(255,255,255,.18);overflow:hidden;margin-top:8px}.pct i{display:block;height:100%;background:var(--gold)}
.neigh{display:flex;flex-wrap:wrap;gap:6px}.neigh a{background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:5px 10px;font-size:13px;color:var(--ink);text-decoration:none}
.neigh a.on{background:var(--ink);color:#fff}
.tw{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -4px;padding:0 4px}
@media (max-width:420px){.t{font-size:13px}.t th,.t td{padding:8px 4px}}
@media (max-width:560px){.form{grid-template-columns:1fr}.others{grid-template-columns:1fr 1fr}.big b{font-size:32px}h1{font-size:26px}}